12811050 has 144 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 2892960.

The previous prime is 12811049. The next prime is 12811061. The reversal of 12811050 is 5011821.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 154309 + ... + 154391.

It is an arithmetic number, because the mean of its divisors is an integer number (282100).

Almost surely, 2^12811050 is an apocalyptic number.

12811050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12811050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20311200).

12811050 is an abundant number, since it is smaller than the sum of its proper divisors (27811350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12811050 is a wasteful number, since it uses less digits than its factorization.

12811050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 12811050 is about 3579.2527153025. The cubic root of 12811050 is about 233.9887130212.

Adding to 12811050 its reverse (5011821), we get a palindrome (17822871).

The spelling of 12811050 in words is "twelve million, eight hundred eleven thousand, fifty".